GMC 1999 Suburban, Owner'S Manual, Page: 83 / 424

yellow blue
2-13
ACCESSORY (A): This position lets you use things
like the radio and the windshield wipers when the
engine is off. Push in the key and turn it toward you.
Your steering wheel will remain locked, just as it was
before you inserted the key.
LOCK (B): This position locks your ignition, steering
wheel and transmission. It’s a theft
-
deterrent feature.
You will only be able to remove your key when the
ignition is turned to LOCK.
OFF (C): This position lets you turn off the engine but
still turn the steering wheel. It doesn’t lock the steering
wheel like LOCK. Use OFF if you must have your
vehicle in motion while the engine is off (for example, if
your vehicle is being pushed).
RUN (D): This is the position for driving.
START (E): This position starts your engine.
NOTICE:
If your key seems stuck in LOCK and you can’t
turn it, be sure you are using the correct key; if
so, is it all the way in? If it is, then turn the
steering wheel left and right while you turn the
key hard. But turn the key only with your hand.
Using a tool to force it could break the key or the
ignition switch. If none of this works, then your
vehicle needs service.
Starting Your Gasoline Engine
If you have a diesel engine, see “Starting Your Diesel
Engine” in the Diesel Engine Supplement.
Move your shift lever to PARK (P) or NEUTRAL (N).
Your engine won’t start in any other position
--
that’s a
safety feature. To restart when you’re already moving,
use NEUTRAL (N) only.